Anyone using any type of transmission additive in their trannys? I have a GSR tranny and its starting to feel...weak? Changed out the fluid to OEM fluid not too long ago, and clutch is an exedy just over a year old. I noticed that once the tranny gets driven on hard a few times, it wont go into 2nd. Just wondering if anyone was experiencing the same problem and what you used to solve/help it out a bit?

 

inspect your shift linkage!
people swear by GM syncromesh including me.

if the linkage is ok, and syncromesh doesn't help, you will need a rebuild.

 

Ya i run GM sycro in my GSR. Works a lot better than honda mtf, but it's not a miracle worker.

 

Honda MTF was reformulated a few years back. I've been using GM Synchromesh Friction Modified (NOT the same as regular SM) exclusively since 2003. I still have 3 quarts of it left in the garage, but after I use that up (if I still have the car lol) I'll probably try the new MTF.

But yeah my tranny has nearly 290,000 miles on it and still shifts flawlessly, even with the short shifter I've been using for nearly 200K miles since 2001.

 

I just put the new honda mtf in my 200,000 mile ls tranny.
Shifted fine before but it feels nice and smooth now.

 

Do I fill up my whole tranny with the GM synchromesh or mix it with something else?! Where can I buy this stuff and how much of it do i need? Also Pricing?

 

if you are driving hard could be a torn motor mount too. Hard shifts with a torn mount sometimes it is very tough to get in gear. I thought i had a problem with the trans, turned out once i replace motor mounts. shifted smooth again. have been using honda mtf. no problems. auto-x and hpde

 

It's pretty hard to find the Friction Modified stuff. You may be able to get it online somewhere, but it will be expensive. I bought the last 6 quarts from a local Chevy dealer where my buddy used to work back in 2008 for his cost, came out to less than $60 for the 6 quarts.

I have run the FM fluid exclusively with nothing else for nearly 150K miles, since 2003.

 

What about the regular GM synchromesh MTF? Whats the pricing and where can I get some? Also how many quarts will I need and do I mix it with the honda MTF or completely drain out the Honda MTF and use ONLY the GM synchromesh MTF?

 

I honestly can't say if regular SM is any better than Honda MTF. It probably isn't. If you're going to try SM you might as well just get the Pennzoil stuff available at any auto parts store.

And don't bother mixing it. Just use one or the other - 3 quarts for 2.3 qt. capacity.

 

Yes sir its expensive, 12$ a bottle took 3 and a 1/4 to fill mine and I work at a shop, n got mine at cost. For the penz SM. Totaly worth it!

 

Honda MTF here, no additives needed.

 

I just bought some PenZoil SynchroMesh..The guy at AutoZone said 2qts. would do, what do you guys recommend?

 

Unless you totally tore down your transmission and cleaned every internal piece and did a complete dry fill, then you seriously overfilled your transmission.

Guy at AZ doesn't know jack. Transmission takes about 2.3 quarts, so you need to buy 3.

 

Wuttup....what if it grinds in different gears, and only sometimes. Weird but sometimes will grind normal drivin, sometimes it won't. Most of the times, when it does grind it's 2nd and 3rd gear....iono

 

The car needs to be level as well

 

I put the Gm synchromesh in my 92 and it works great. I agree with Patrick, it took 2 full quarts and some of a third bottle to fill mine. It was like $12 a quart at the dealer but in my opinion it was money well spent.

 

Grinding or crunching is typically a sign of wear on the teeth on transmission parts, including hub selectors, synchros, and the drive gears themselves. Some transmission fluids like the Synchromesh may mask those symptoms, but that's what causes it. Unfortunately, the permanent solution involves taking the transmission apart, which is labor intensive in addition to the cost of the parts.

 

I run BG syncroshift!

 

Ya, lol Was talking about my accord.

 

synchromesh or redline mtf here.

the only other issue that can cause gear grinding is the clutch. if you have your clutch set to engage off the floor it's possible to get 2nd gear grinds when you're redlining 1st since there is that much less time the clutch is in before second. actually fixed a grinding car once by changing the TB.

 

Even if it's intermitten? (sp)...

 

Bumpe.....